EP0605784A1 - Acoustic panel - Google Patents

Acoustic panel Download PDF

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Publication number
EP0605784A1
EP0605784A1 EP93118864A EP93118864A EP0605784A1 EP 0605784 A1 EP0605784 A1 EP 0605784A1 EP 93118864 A EP93118864 A EP 93118864A EP 93118864 A EP93118864 A EP 93118864A EP 0605784 A1 EP0605784 A1 EP 0605784A1
Authority
EP
European Patent Office
Prior art keywords
panel according
acoustic panel
cover layer
bores
outer cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93118864A
Other languages
German (de)
French (fr)
Other versions
EP0605784B1 (en
Inventor
Frank H. Wilhelmi
Klaus Dr. Bender
Bernd Fiedler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilhelmi Werke AG
Original Assignee
Wilhelmi Werke GmbH and Co KG
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Filing date
Publication date
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Publication of EP0605784A1 publication Critical patent/EP0605784A1/en
Application granted granted Critical
Publication of EP0605784B1 publication Critical patent/EP0605784B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/12—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/14—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/10—Next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0457—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having closed internal cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0464—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having irregularities on the faces, e.g. holes, grooves
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0867—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8495—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the openings going through from one face to the other face of the element

Definitions

  • the invention relates to an acoustic panel in sandwich construction for the formation of sound-absorbing ceilings or walls with a support panel provided with through holes transverse to the panel surface, but otherwise homogeneous, easily machinable carrier panel, for example an organically or inorganically bonded particle board or plasterboard.
  • Acoustic panels of this or a similar design have long been known. Their carrier plates themselves do not contribute to sound absorption; this is achieved only by the through-holes, damping being mostly achieved by backing the carrier plate with a relatively thick layer of sound-absorbing material, for example mats made of mineral or glass fibers. Although this leads to the damping of the narrow-band resonance that usually occurs in resonators, so that the steep drop in the sound absorption curve present on both sides of the resonance frequency is flattened; nevertheless, a uniformly high degree of sound absorption in the entire room acoustically relevant frequency range from 152 Hz to 4000 Hz cannot be achieved.
  • the invention is therefore based on the object of designing an acoustic panel of the type specified in the introduction in such a way that, with the carrier panel retained and not contributing to sound absorption, a sound absorption capacity is achieved which is equal to or close to that of a porous absorber.
  • such an acoustic panel should be flexible enough to either keep its absorption capacity at the same level in the entire frequency band or, in addition, to develop a particularly high absorption capacity at certain frequency intervals.
  • an acoustic panel of the type mentioned which, in addition to the carrier panel, has an outer porous, thin cover layer made of a nonwoven, a fabric, a film or the like which is firmly connected to the ceiling or wall and is firmly connected to the carrier panel having.
  • the carrier plate can be provided with a color and / or structure coating on its plate surface facing the room.
  • a particularly advantageous embodiment consists in that an inner, toward the room, firmly connected to the support plate, porous, thin cover layer made of a nonwoven, a fabric, a film or the like is provided, the flow resistance of which is less against an air flow directed transversely to the plate surface , is preferably significantly smaller than that of the outer cover layer. It is again possible that the inner cover layer is provided with a color and / or structure coating.
  • Such an embodiment according to the invention in which the usual deposit of a thick layer of sound-absorbing material is dispensed with, surprisingly shows very broadband absorption behavior with a high degree of sound absorption. Even if the top layer visible from the room is completely removed, the sound absorption is still very good.
  • blind holes are provided transversely to the plate surface in a slightly modified embodiment of the acoustic panel according to the invention, which are open on the side facing the room.
  • a ceiling or wall of a room composed of such acoustic panels offers good sound insulation in the entire audible sound range, possibly improved at certain, particularly heavily loaded frequency intervals, without the usual requirements for good workability and easy installation of such a ceiling or wall covering having to be abandoned. It is also noteworthy that a color and / or structure coating, regardless of whether it is applied directly to the carrier plate or to the inner cover layer, does not cause any significant impairment of the sound absorption behavior.
  • the acoustic panel according to the invention can, if necessary, be manufactured in a flame-retardant or non-flammable version.
  • a carrier plate 1 is provided with an outer cover layer 4 on its plate surface 3 facing a room ceiling or wall 2.
  • the carrier plate 1 is equipped with through holes 5, since it is itself made of a non-absorbent material, for example a chipboard.
  • a color and / or structure coating 6 covers these through holes 5 on the plate surface 7 of the carrier plate 1 directed towards the room.
  • a curve 1 is shown in FIG. 4, in which the degree of sound absorption is plotted against the sound frequency. which can be achieved with an arrangement according to FIG. 1.
  • FIG. 2 in which the plate surface 3 is uncoated when the carrier plate 1 is unchanged, and which is illustrated in FIG.
  • FIG. 4 is the diagram of a measurement in which thin nonwovens have been used for the cover layers 4 and 8.
  • FIG. 9 shows the same measurement results if plastic foils are used instead of the nonwovens; curve 1 corresponds to an arrangement corresponding to FIG. 3 and curve 2 corresponds to an arrangement corresponding to FIG. 1. It can be seen that the sound absorption is improved if an inner cover layer 8 is completely dispensed with. Although the values of the degree of sound absorption achieved here are somewhat lower than in the case of the measurement results shown in FIG. 4 with a fleece, the sound absorption achieved with such thin, perforated foils is sufficient in many cases.
  • FIG. 6 and 7 modifications of the arrangement corresponding to FIG. 1 have been made by (FIG. 6) the through holes 5a of the carrier plate 1 with a diameter d onto a smaller through hole 5b with the diameter d retracted in the direction of the outer cover layer 4 or (FIG. 7) the through holes 5 remain unchanged and smaller through holes 4b of diameter d are provided.
  • the length l -l of the smaller through holes 4b; 5b is small compared to the length l of the large through holes 5; 5a.
  • the sound absorption level associated with both variants is located in Fig. 8. A clear improvement in sound absorption towards higher frequencies is unmistakable.
  • FIG. 10 shows an exemplary embodiment in which blind holes 9 are provided in addition to the through holes 5 in the carrier plate 1.
  • 11 shows the measurement result for an arrangement corresponding to FIG. 10, but in which no cover layers 4 or 8 were provided. The impressive result shows that it is quite possible to significantly increase the sound absorption level in certain frequency ranges.

Abstract

For the sound insulation of rooms, use is made of acoustic panels which can be assembled to form ceilings and, on the one hand, are intended to have a high degree of sound absorption over the entire audible frequency range or specific selected bands, but, on the other hand, have to be easily machinable and have to be able to be provided with a corresponding colour or textured coating. Suitable for this purpose are sandwich-structure acoustic panels, in the case of which an easily machinable carrier panel, preferably a particle board, is provided with a covering layer which is directed towards the room wall or room ceiling and consists of a thin nonwoven or of a perforated sheet, the carrier panel being equipped with through-passage bores since it does not itself have any capacity for sound absorption. <IMAGE>

Description

Die Erfindung betrifft eine Akustikplatte in Sandwich-Bauweise zur Bildung von schallabsorbierenden Raumdecken oder -wänden mit einer mit Durchgangsbohrungen quer zur Plattenfläche versehenen, sonst aber homogenen, leicht spangebend bearbeitbaren Trägerplatte, beispielsweise einer organisch oder anorganisch gebundenen Spanplatte oder Gipsplatte.The invention relates to an acoustic panel in sandwich construction for the formation of sound-absorbing ceilings or walls with a support panel provided with through holes transverse to the panel surface, but otherwise homogeneous, easily machinable carrier panel, for example an organically or inorganically bonded particle board or plasterboard.

Akustikplatten dieser oder ähnlicher Ausführung sind seit langem bekannt. Ihre Trägerplatten tragen selbst nichts zur Schallabsorption bei; dies besorgen erst die Durchgangsbohrungen, wobei eine Dämpfung zumeist dadurch erreicht wird, daß die Trägerplatte mit einer relativ dicken Schicht aus schallschluckendem Werkstoff, zum Beispiel Matten aus Mineral- oder Glasfasern, hinterlegt wird. Dies führt zwar zur Dämpfung der bei Resonatoren üblicherweise auftretenden schmalbandigen Resonanz, so daß der beidseitig der Resonanzfrequenz vorhandene steile Abfall der Schallschluckgradkurve abgeflacht wird; trotzdem läßt sich damit ein gleichmäßig hoher Schallschluckgrad im gesamten raumakustisch relevanten Frequenzbereich von 152 Hz bis 4000 Hz nicht erreichen.Acoustic panels of this or a similar design have long been known. Their carrier plates themselves do not contribute to sound absorption; this is achieved only by the through-holes, damping being mostly achieved by backing the carrier plate with a relatively thick layer of sound-absorbing material, for example mats made of mineral or glass fibers. Although this leads to the damping of the narrow-band resonance that usually occurs in resonators, so that the steep drop in the sound absorption curve present on both sides of the resonance frequency is flattened; nevertheless, a uniformly high degree of sound absorption in the entire room acoustically relevant frequency range from 152 Hz to 4000 Hz cannot be achieved.

Die Erfindung hat sich deshalb die Aufgabe gestellt, eine Akustikplatte der eingangs näher bezeichneten Art so auszuführen, daß bei beibehaltener, zur Schallabsorption nichts beitragender Trägerplatte ein Schallschluckvermögen erreicht wird, das demjenigen eines porösen Absorbers gleich oder nahekommt. Außerdem soll eine derartige Akustikplatte flexibel genug sein, um ihre Absorptionsfähigkeit entweder im gesamten Frequenzband gleich hoch zu halten oder zusätzlich ein besonders hohes Absorptionsvermögen in bestimmten Frequenzintervallen zu entfalten.The invention is therefore based on the object of designing an acoustic panel of the type specified in the introduction in such a way that, with the carrier panel retained and not contributing to sound absorption, a sound absorption capacity is achieved which is equal to or close to that of a porous absorber. In addition, such an acoustic panel should be flexible enough to either keep its absorption capacity at the same level in the entire frequency band or, in addition, to develop a particularly high absorption capacity at certain frequency intervals.

Gemäß der Erfindung wird die Aufgabe durch eine Akustikplatte der eingangs bezeichneten Art gelöst, die außer der Trägerplatte eine äußere, auf die Raumdecke oder -wand hin gerichtete, mit der Trägerplatte fest verbundene poröse dünne Deckschicht aus einem Vlies, einem Gewebe, einer Folie oder dergleichen aufweist. Die Trägerplatte kann dabei auf ihrer zum Raum hin gerichteten Plattenfläche mit einer Farb- und/oder Strukturbeschichtung versehen sein. Eine besonders vorteilhafte Ausführung besteht darin, daß eine innere, zum Raum hin gerichtete, mit der Trägerplatte fest verbundene, poröse, dünne Deckschicht aus einem Vlies, einem Gewebe, einer Folie oder dergleichen vorgesehen ist, deren Strömungswiderstand gegen eine quer zur Plattenfläche gerichtete Luftströmung kleiner, vorzugsweise wesentlich kleiner als diejenige der äußeren Deckschicht ist. Dabei ist es wiederum möglich, daß die innere Deckschicht mit einer Farb- und/oder Strukturbeschichtung versehen ist.According to the invention, the object is achieved by an acoustic panel of the type mentioned which, in addition to the carrier panel, has an outer porous, thin cover layer made of a nonwoven, a fabric, a film or the like which is firmly connected to the ceiling or wall and is firmly connected to the carrier panel having. The carrier plate can be provided with a color and / or structure coating on its plate surface facing the room. A particularly advantageous embodiment consists in that an inner, toward the room, firmly connected to the support plate, porous, thin cover layer made of a nonwoven, a fabric, a film or the like is provided, the flow resistance of which is less against an air flow directed transversely to the plate surface , is preferably significantly smaller than that of the outer cover layer. It is again possible that the inner cover layer is provided with a color and / or structure coating.

Eine derartige erfindungsgemäße Ausführung, bei der auf die übliche Hinterlegung einer dicken Schicht aus schallschluckendem Material verzichtet ist, zeigt überraschenderweise ein sehr breitbandiges Absorptionsverhalten bei hohem Schallschluckgrad. Selbst wenn die vom Raum aus sichtbare Deckschicht ganz wegfällt, ist die Schallabsorption nach wie vor sehr gut.Such an embodiment according to the invention, in which the usual deposit of a thick layer of sound-absorbing material is dispensed with, surprisingly shows very broadband absorption behavior with a high degree of sound absorption. Even if the top layer visible from the room is completely removed, the sound absorption is still very good.

Für die Verbesserung der Dämpfung hochfrequenter Töne sind in einer etwas veränderten Ausführung der erfindungsgemäßen Akustikplatte Sackbohrungen quer zur Plattenfläche vorgesehen, die nach der zum Raum hin gerichteten Seite offen sind.To improve the attenuation of high-frequency tones, blind holes are provided transversely to the plate surface in a slightly modified embodiment of the acoustic panel according to the invention, which are open on the side facing the room.

Weitere Merkmale der Erfindung enthalten die Unteransprüche.Further features of the invention contain the subclaims.

Durch die Erfindung wird insgesamt die Aufgabenstellung in überraschend einfacher Weise gelöst. Eine aus derartigen Akustikplatten zusammengesetzte Raumdecke beziehungsweise Raumwand bietet einen guten Schallschutz im gesamten hörbaren Schallbereich, gegebenenfalls verbessert in bestimmten, besonders hoch belasteten Frequenzintervallen, ohne daß dabei die üblichen Anforderungen an eine gute Bearbeitbarkeit und leichte Verlegung einer solchen Decken- beziehungsweise Wandverkleidung aufgegeben werden müßten. Bemerkenswert ist auch, daß eine Farb- und/oder Strukturbeschichtung, gleichgültig, ob sie direkt auf die Trägerplatte oder auf die innere Deckschicht aufgetragen ist, keine wesentliche Beeinträchtigung des Schallschluckverhaltens hervorruft.Overall, the task is solved in a surprisingly simple manner by the invention. A ceiling or wall of a room composed of such acoustic panels offers good sound insulation in the entire audible sound range, possibly improved at certain, particularly heavily loaded frequency intervals, without the usual requirements for good workability and easy installation of such a ceiling or wall covering having to be abandoned. It is also noteworthy that a color and / or structure coating, regardless of whether it is applied directly to the carrier plate or to the inner cover layer, does not cause any significant impairment of the sound absorption behavior.

Es versteht sich, daß die erfindungsgemäße Akustikplatte nötigenfalls in schwer entflammbarer oder auch nicht brennbarer Ausführung gefertigt werden kann.It is understood that the acoustic panel according to the invention can, if necessary, be manufactured in a flame-retardant or non-flammable version.

Die Erfindung wird nachstehend anhand der Zeichnung an mehreren Ausführungsbeispielen näher erläutert. Es zeigen

Fig. 1
eine erfindungsgemäße Akustikplatte, bestehend aus einer Trägerplatte und einer äußeren Deckschicht,
Fig. 2
eine Ausführung wie Fig. 1, jedoch (nicht erfindungsgemäß) ohne die äußere Deckschicht,
Fig. 3
eine weitere Ausführung wie Fig. 1, jedoch zusätzlich mit einer inneren Deckschicht,
Fig. 4
ein Schaubild mit der Darstellung des Schallabsorptionsgrades der Akustikplatten entsprechend Fig. 1 bis 3,
Fig. 5
ein Schaubild entsprechend Fig. 4, jedoch mit Darstellung der Hallraum-Messung,
Fig. 6
eine weitere Ausführung wie Fig. 1, mit eingezogenen Durchgangsbohrungen,
Fig. 7
eine Variante der Ausführung entsprechend Fig. 6,
Fig. 8
ein Schaubild mit der Darstellung des Schallabsorptionsgrades für Akustikplatten entsprechend den Fig. 6 oder 7,
Fig. 9
ein weiteres Schaubild mit etwas veränderten Deckschichten entsprechend Fig. 3 bzw. Fig. 1,
Fig. 10
ein weiteres Ausführungsbeispiel, bei dem zusätzlich Sackbohrungen angeordnet sind, und
Fig. 11
ein Schaubild für den Schallabsorptionsgrad einer Anordnung entsprechend Fig. 10.
The invention is explained in more detail below with the aid of several exemplary embodiments. Show it
Fig. 1
an acoustic panel according to the invention, consisting of a carrier plate and an outer cover layer,
Fig. 2
an embodiment like FIG. 1, but (not according to the invention) without the outer cover layer,
Fig. 3
another embodiment like FIG. 1, but additionally with an inner cover layer,
Fig. 4
1 shows a diagram with the representation of the sound absorption level of the acoustic panels according to FIGS. 1 to 3,
Fig. 5
4, but with a representation of the reverberation room measurement,
Fig. 6
another embodiment like Fig. 1, with retracted through holes,
Fig. 7
6 shows a variant of the embodiment according to FIG. 6,
Fig. 8
6 shows a diagram showing the degree of sound absorption for acoustic panels according to FIGS. 6 or 7,
Fig. 9
another diagram with somewhat modified cover layers according to FIG. 3 or FIG. 1,
Fig. 10
a further embodiment in which blind holes are additionally arranged, and
Fig. 11
10 shows a diagram for the sound absorption level of an arrangement corresponding to FIG. 10.

Bei einer erfindungsgemäßen Anordnung entsprechend Fig. 1 ist eine Trägerplatte 1 auf ihrer zu einer Raumdecke oder -wand 2 hin gerichteten Plattenfläche 3 mit einer äußeren Deckschicht 4 versehen. Die Trägerplatte 1 ist mit Durchgangsbohrungen 5 ausgerüstet, da sie selbst aus nicht absorbierendem Werkstoff, beispielsweise aus einer Spanplatte, hergestellt ist. Eine Farb- und/oder Strukturbeschichtung 6 überdeckt diese Durchgangslöcher 5 auf der zum Raum hin gerichteten Plattenfläche 7 der Trägerplatte 1. In der Fig. 4, in der der Schallabsorptionsgrad über der Schallfrequenz aufgetragen ist, ist eine Kurve 1 gezeigt, die sich mit einer Anordnung entsprechend Fig. 1 erreichen läßt. Insbesondere im Vergleich mit einer Anordnung entsprechend Fig. 2, bei der bei unveränderter Trägerplatte 1 deren Plattenfläche 3 unbeschichtet ist, und die in Fig. 4 durch die Kurve 2 veranschaulicht ist, wird deutlich, in welchem Umfang die Schallabsorption verbessert wird, wenn eine erfindungsgemäße äußere Deckschicht vorgesehen ist. Hingegen ist in Fig. 4 auch ersichtlich, daß durch eine Anordnung entsprechend der Fig. 3, bei der zusätzlich eine innere Deckschicht 8 vorgesehen ist, eine weitere Verbesserung der Schallabsorption nicht erreichbar ist. Dabei ist die Fig. 4 das Schaubild einer Messung, bei der für die Deckschichten 4 und 8 dünne Vliese verwendet worden sind. Im Gegensatz dazu zeigt Fig. 9 die gleichen Meßergebnisse, wenn statt der Vliese Kunststoffolien verwendet werden; dabei entspricht die Kurve 1 einer Anordnung entsprechend Fig. 3 und die Kurve 2 einer Anordnung entsprechend Fig. 1. Es ist zu erkennen, daß die Schallabsorption verbessert wird, wenn auf eine innere Deckschicht 8 völlig verzichtet wird. Zwar sind die erreichten Werte des Schallabsorptionsgrades hier etwas geringer als bei den in Fig. 4 gezeigten Meßergebnissen mit einem Vlies, jedoch reicht die mit derartigen dünnen, perforierten Folien erzielte Schallabsorption in vielen Fällen aus.In an arrangement according to the invention according to FIG. 1, a carrier plate 1 is provided with an outer cover layer 4 on its plate surface 3 facing a room ceiling or wall 2. The carrier plate 1 is equipped with through holes 5, since it is itself made of a non-absorbent material, for example a chipboard. A color and / or structure coating 6 covers these through holes 5 on the plate surface 7 of the carrier plate 1 directed towards the room. A curve 1 is shown in FIG. 4, in which the degree of sound absorption is plotted against the sound frequency. which can be achieved with an arrangement according to FIG. 1. In particular in comparison with an arrangement according to FIG. 2, in which the plate surface 3 is uncoated when the carrier plate 1 is unchanged, and which is illustrated in FIG. 4 by curve 2, it becomes clear to what extent the sound absorption is improved when an inventive one is used outer cover layer is provided. On the other hand, it can also be seen in FIG. 4 that a further improvement in sound absorption cannot be achieved by an arrangement corresponding to FIG. 3, in which an inner cover layer 8 is additionally provided. 4 is the diagram of a measurement in which thin nonwovens have been used for the cover layers 4 and 8. In contrast, FIG. 9 shows the same measurement results if plastic foils are used instead of the nonwovens; curve 1 corresponds to an arrangement corresponding to FIG. 3 and curve 2 corresponds to an arrangement corresponding to FIG. 1. It can be seen that the sound absorption is improved if an inner cover layer 8 is completely dispensed with. Although the values of the degree of sound absorption achieved here are somewhat lower than in the case of the measurement results shown in FIG. 4 with a fleece, the sound absorption achieved with such thin, perforated foils is sufficient in many cases.

In den Fig. 6 und 7 sind Abwandlungen der Anordnung entsprechend Fig. 1 getroffen, indem (Fig. 6) die Durchgangsbohrungen 5a der Trägerplatte 1 mit einem Durchmesser d auf eine kleinere Durchgangsbohrung 5b mit dem Durchmesser d

Figure imgb0001
in Richtung auf die äußere Deckschicht 4 eingezogen bzw. (Fig. 7) die Durchgangsbohrungen 5 unverändert bleiben und zu ihnen koaxial in der Deckschicht 4 kleinere Durchgangsbohrungen 4b vom Durchmesser d
Figure imgb0001
vorgesehen sind. Die Länge l
Figure imgb0001
-l der kleineren Durchgangsbohrungen 4b;5b ist dabei klein gegen die Länge l der großen Durchgangsbohrungen 5;5a. Der für beide Varianten zugehörige Schallabsorptionsgrad ist in der Fig. 8 eingezeichnet. Eine deutliche Verbesserung der Schallabsorption in Richtung höherer Frequenzen ist unverkennbar.6 and 7, modifications of the arrangement corresponding to FIG. 1 have been made by (FIG. 6) the through holes 5a of the carrier plate 1 with a diameter d onto a smaller through hole 5b with the diameter d
Figure imgb0001
retracted in the direction of the outer cover layer 4 or (FIG. 7) the through holes 5 remain unchanged and smaller through holes 4b of diameter d
Figure imgb0001
are provided. The length l
Figure imgb0001
-l of the smaller through holes 4b; 5b is small compared to the length l of the large through holes 5; 5a. The sound absorption level associated with both variants is located in Fig. 8. A clear improvement in sound absorption towards higher frequencies is unmistakable.

Im Unterschied zu den Anordnungen entsprechend Fig. 1 bis 3, 6 und 7 zeigt Fig. 10 ein Ausführungsbeispiel, bei dem zusätzlich zu den Durchgangsbohrungen 5 in der Trägerplatte 1 Sackbohrungen 9 vorgesehen sind. Fig. 11 zeigt das Meßergebnis für eine Anordnung entsprechend Fig. 10, bei der aber keine Deckschichten 4 oder 8 vorgesehen waren. Das beeindruckende Ergebnis zeigt, daß es durchaus möglich ist, den Schallabsorptionsgrad in bestimmten Frequenzbereichen erheblich anzuheben.In contrast to the arrangements corresponding to FIGS. 1 to 3, 6 and 7, FIG. 10 shows an exemplary embodiment in which blind holes 9 are provided in addition to the through holes 5 in the carrier plate 1. 11 shows the measurement result for an arrangement corresponding to FIG. 10, but in which no cover layers 4 or 8 were provided. The impressive result shows that it is quite possible to significantly increase the sound absorption level in certain frequency ranges.

Claims (21)

Akustikplatte in Sandwich-Bauweise zur Bildung von schallabsorbierenden Raumdecken oder -wänden, bestehend aus einer mit Durchgangsbohrungen (5) quer zur Plattenfläche (3;7) versehenen, sonst aber homogenen, leicht spangebend bearbeitbaren Trägerplatte (1), beispielsweise einer organisch oder anorganisch gebundenen Spanplatte oder Gipsplatte, und einer äußeren auf die Raumdecke oder -wand (2) hin gerichteten, mit der Trägerplatte (1) fest verbundenen porösen, dünnen Deckschicht (4) aus einem Vlies, einem Gewebe, einer Folie oder dergleichen.Acoustic panel in sandwich construction for the formation of sound-absorbing ceilings or walls, consisting of a support panel (1) provided with through holes (5) transverse to the panel surface (3; 7), but otherwise homogeneous, easily machinable, for example an organically or inorganically bound support panel Particle board or gypsum board, and an outer porous, thin cover layer (4) made of a nonwoven, a woven fabric, a film or the like, which is directed towards the ceiling or wall (2) and is firmly connected to the carrier board (1). Akustikplatte nach Anspruch 1, dadurch gekennzeichnet, daß die Trägerplatte (1) mit Sackbohrungen (9) quer zu den Plattenflächen (3;7) versehen ist, die nach der zum Raum hin gerichteten Seite offen sind.Acoustic panel according to claim 1, characterized in that the carrier panel (1) is provided with blind bores (9) transverse to the panel surfaces (3; 7) which are open on the side facing the room. Akustikplatte nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Durchgangsbohrungen (5) und/oder die Sackbohrungen (9) einen Durchmesser zwischen 5 mm und 20 mm, vorzugsweise aber von 10 mm haben.Acoustic panel according to one of claims 1 or 2, characterized in that the through bores (5) and / or the blind bores (9) have a diameter between 5 mm and 20 mm, but preferably of 10 mm. Akustikplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Durchgangsbohrungen (5) und die Sackbohrungen (9) zusammen 10% bis 30%, vorzugsweise aber 20% des Raumvolumens der Trägerplatte (1) einnehmen.Acoustic panel according to one of Claims 1 to 3, characterized in that the through bores (5) and the blind bores (9) together take up 10% to 30%, but preferably 20%, of the volume of the support panel (1). Akustikplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Durchgangsbohrungen (5a) vorgesehen sind, deren Durchmesser (d) in der Trägerplatte (1) auf der Seite der äußeren Deckschicht (4) auf eine Durchgangsbohrung (5b) mit einem kleineren Durchmesser (d
Figure imgb0001
) eingezogen ist.Acoustic panel according to one of Claims 1 to 4, characterized in that through-bores (5a) are provided, the diameter (d) of which in the carrier plate (1) on the side of the outer cover layer (4) points to a through-bore (5b) with a smaller diameter (i.e.
Figure imgb0001
) has moved in. Akustikplatte nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die äußere Deckschicht (4) in den Achsen der Durchgangsbohrungen (5) in der Trägerplatte (1) konzentrische Durchgangsbohrungen (4b) aufweist, deren Durchmesser (d
Figure imgb0001
) kleiner ist als der Durchmesser (d) der Durchgangsbohrungen (5) in der Trägerplatte (1).Acoustic panel according to one of claims 1 to 4, characterized in that the outer cover layer (4) in the axes of the through bores (5) in the support plate (1) has concentric through bores (4b) whose diameter (i.e.
Figure imgb0001
) is smaller than the diameter (d) of the through bores (5) in the carrier plate (1). Akustikplatte nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß der Durchmesser (d
Figure imgb0001
) der kleinen Durchgangsbohrungen (4b;5b) zwischen 0,5 mm und 4 mm, vorzugsweise 1,5 mm beträgt.Acoustic panel according to one of claims 5 or 6, characterized in that the diameter (i.e.
Figure imgb0001
) of the small through holes (4b; 5b) is between 0.5 mm and 4 mm, preferably 1.5 mm. Akustikplatte nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Länge (l
Figure imgb0001
) der großen Durchgangsbohrungen (5a) einschließlich der kleinen Durchgangsbohrungen (4b;5b) zwischen 50% und 95%, vorzugsweise 95% der Länge (l) der Durchgangsbohrungen (5a) in der Trägerplatte (1) allein beträgt.Acoustic panel according to one of claims 5 to 7, characterized in that the length (l
Figure imgb0001
) of the large through holes (5a) including the small through holes (4b; 5b) is between 50% and 95%, preferably 95% of the length (l) of the through holes (5a) in the carrier plate (1) alone. Akustikplatte nach Anspruch 1 bis 8, dadurch gekennzeichnet, daß eine innere, zum Raum hin gerichtete, mit der Trägerplatte (1) fest verbundene, poröse, dünne Deckschicht (8) aus einem Vlies, einem Gewebe, einer Folie oder dergleichen vorgesehen ist, deren Strömungswiderstand gegen eine quer zu den Plattenflächen (3;7) gerichtete Luftströmung kleiner, vorzugsweise wesentlich kleiner, als derjenige der äußeren Deckschicht (4) ist.Acoustic panel according to Claims 1 to 8, characterized in that an inner, porous, thin cover layer (8) made of a nonwoven, a woven fabric, a film or the like is provided, which is directed towards the room and is firmly connected to the support panel (1) Flow resistance against an air flow directed transversely to the plate surfaces (3; 7) is smaller, preferably significantly smaller than that of the outer cover layer (4). Akustikplatte nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die innere Deckschicht (8) mit einer Farb- und/oder Strukturbeschichtung (6) versehen ist.Acoustic panel according to one of claims 1 to 9, characterized in that the inner cover layer (8) is provided with a color and / or structural coating (6). Akustikplatte nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die äußere Deckschicht (4) aus miteinander verklebten Fasern besteht, ohne daß dadurch die Porosität der Deckschicht (4) gestört ist.Acoustic panel according to one of Claims 1 to 10, characterized in that the outer cover layer (4) consists of fibers which are glued to one another without the porosity of the cover layer (4) being disturbed thereby. Akustikplatte nach Anspruch 11, dadurch gekennzeichnet, daß die Fasern mittels eines organischen oder anorganischen Klebstoffes miteinander verklebt sind.Acoustic panel according to claim 11, characterized in that the fibers are glued to one another by means of an organic or inorganic adhesive. Akustikplatte nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die äußere Deckschicht (4) aus einer perforierten Folie besteht.Acoustic panel according to one of claims 1 to 10, characterized in that the outer cover layer (4) consists of a perforated film. Akustikplatte nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Trägerplatte (1) eine Dicke zwischen 10 mm und 30 mm, vorzugsweise aber von 19 mm hat.Acoustic panel according to one of claims 1 to 13, characterized in that the carrier plate (1) has a thickness between 10 mm and 30 mm, but preferably of 19 mm. Akustikplatte nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die äußere Deckschicht (4) eine Dicke zwischen 0,1 mm und 2 mm hat.Acoustic panel according to one of claims 1 to 14, characterized in that the outer cover layer (4) has a thickness between 0.1 mm and 2 mm. Akustikplatte nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß der Werkstoff für die Trägerplatte (1) eine Dichte von 300 kg/m³ bis 1100 kg/m³ hat.Acoustic panel according to one of Claims 1 to 15, characterized in that the material for the carrier panel (1) has a density of 300 kg / m³ to 1100 kg / m³. Akustikplatte nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die Flächendichte der inneren und/oder äußeren Deckschicht (4;8) zwischen 40 g/m² und 250 g/m² beträgt.Acoustic panel according to one of claims 1 to 16, characterized in that the areal density of the inner and / or outer cover layer (4; 8) is between 40 g / m² and 250 g / m². Akustikplatte nach einem der Ansprüche 10 bis 17, dadurch gekennzeichnet, daß die Flächendichte der Farb- und/oder Strukturbeschichtung (6) zwischen 150 g/m² und 4000 g/m², vorzugsweise aber 220 g/m² beträgt.Acoustic panel according to one of Claims 10 to 17, characterized in that the areal density of the color and / or structural coating (6) is between 150 g / m² and 4000 g / m², but preferably 220 g / m². Akustikplatte nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß ihr flächiger Umriß rechteckig ausgeführt ist und ihre Länge zwischen 40 cm und 350 cm, vorzugsweise aber 125 cm, und ihre Breite zwischen 10 cm und 125 cm, vorzugsweise aber 60 cm beträgt.Acoustic panel according to one of claims 1 to 18, characterized in that its flat outline is rectangular and its length is between 40 cm and 350 cm, but preferably 125 cm, and its width is between 10 cm and 125 cm, but preferably 60 cm. Akustikplatte nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß ihr flächiger Umriß eine nicht rechteckige Form wie beispielsweise ein Dreieck, ein Vieleck, einen Kreis, eine Ellipse oder eine unsymmetrische Fläche aufweist.Acoustic panel according to one of claims 1 to 18, characterized in that its planar outline has a non-rectangular shape such as a triangle, a polygon, a circle, an ellipse or an asymmetrical surface. Akustikplatte nach einem der Ansprüche 1 bis 20, dadurch gekennzeichnet, daß die innere und/oder äußere Deckschicht (4;8) mit der Trägerplatte (1) verklebt ist.Acoustic panel according to one of claims 1 to 20, characterized in that the inner and / or outer cover layer (4; 8) is glued to the carrier plate (1).
EP93118864A 1993-01-08 1993-11-24 Acoustic panel Expired - Lifetime EP0605784B1 (en)

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WO2001071116A1 (en) 2000-03-20 2001-09-27 Newmat, S.A. Flexible sheet fabrics for tensile structures, method for making same, tensile false ceilings comprising same
GB2363364A (en) * 2000-06-09 2001-12-19 Collins & Aikman Autom Syst Acoustically absorptive panel
NL1030971C2 (en) * 2006-01-20 2007-07-23 Coatacoustic B V Acoustic panel containing holes, used for soundproofing walls or ceilings, has holes blocked by covering at one end and nonwoven at other end
EP1930515A1 (en) * 2006-12-08 2008-06-11 Georg Ignatius Structural element for buildings, building extensions and similar, and corresponding manufacturing method
AU2010341649B2 (en) * 2009-12-22 2013-11-28 Usg Interiors, Llc Use of porous nonwoven scrims in acoustical panels
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FR2764619B1 (en) * 1997-06-13 1999-08-06 Laudescher Sa ACOUSTIC ABSORPTION COATING
DE102007040034B4 (en) * 2007-08-24 2010-02-11 Vogl, Erich R. Plasterboard perforated plate for sound absorption
DE102009010777B4 (en) * 2009-02-26 2012-10-04 Renke Fuhrmann Method and device for coating open-pored substrates
US11866929B2 (en) * 2018-12-21 2024-01-09 Knauf Gips Kg Panel coating system

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DE9300152U1 (en) 1993-03-11
DE59306737D1 (en) 1997-07-17
EP0605784B1 (en) 1997-06-11
ATE154408T1 (en) 1997-06-15

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